Hi,

OOTB CopyWork activity will not suffice this use case. Find the high level steps below and let us know in case any other information is needed.

• Create custom activity
  • Call pxCreateTopCase API activity to create a Top Case of same class (Assuming you only want to copy top Request and not children)
    • Pass Data Transform name to call during creation (there is a parameter for same in pxCreateTopCase activity)
      • There is a java step in CopyWork activity that actually does the copy of all properties
      • Create a function with the same java code (replace Primary page with pyWorkPage or Pass page name dynamically in Data transform and function)
      • Call this function from this data transform

• Above step will create a Request with same data 
• pxCreateTopCase also provides you an option to store the newly created case id in some property (e.x. CloneInsHandle)
• Configure button to call above activity and then Open Work By Handle with that property (CloneInsHandle)